Final answer:
An electron microscope is capable of resolving objects between 70 micrometers and 1 angstrom. Light microscopes, even with oil immersion lenses, are limited to resolving objects no smaller than 200 nanometers due to light diffraction.
Step-by-step explanation:
The type of microscope that allows resolution of objects between 70 micrometers and 1 angstrom (10 picometers) in size is an electron microscope. While normal light microscopes used in biology labs typically magnify up to 400 times with a resolution of about 200 nanometers, and can use an oil immersion objective to reach 1000x magnification and a resolution of 0.2 µm, they cannot resolve objects smaller than this due to the diffraction limit imposed by the wavelength of light.
Electron microscopes, on the other hand, utilize a much smaller wavelength associated with electrons, enabling higher resolution imaging. They can magnify objects up to 100,000 times with a resolution of 50 picometers as stated, but some can even reach magnifications of up to 1,000,000 times, allowing scientists to view structures well below the capability of light microscopes and within the range of 70 micrometers to 1 angstrom.